Quick 10Q: DNA Replication

Front

Which enzyme is responsible for synthesizing the new DNA strand?

Back

DNA polymerase

Front

What is the difference between leading and lagging strands?

Back

DNA is synthesized continuously on the leading strand and discontinuously on the lagging strand

Front

Which enzyme is responsible for joining the Okazaki fragments?

Back

DNA ligase

Front

Which of the following explains the base pairing rules?

Back

A pairs with T with 2 hydrogen bonds and G pairs with C with 3 hydrogen bonds

Front

Which enzyme breaks the hydrogen bonds between nucleotides?

Back

Helicase

Front

Why does DNA polymerase require primase for synthesis of a new strand?

Back

DNA polymerase requires an open 3' end

Front

What describes the 5' end?

Back

phosphate attached to the pentose sugar

Front

How does DNA replication differ between prokaryotes and eukaryotes?

Back

Prokaryotes have circular DNA requiring one origin of replication while eukaryotes have multiple origins on linear DNA

Front

Why is there a leading and lagging strand in DNA replication? Options: DNA is antiparallel, DNA is negatively charged, DNA has a phosphate group, DNA has hydrogen bonds.

Back

DNA is antiparallel

Front

Which of the following strands would be more stable at a higher temperature? Options:

AATTAATTAATT

,

CCGGCCGGCCGG

,

ATCGATCGATCGAT

,

CGATCGATCGATCG

Back

CCGGCCGGCCGG